package com.hmdp.utils;

import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class LoginInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
    //判断是否需要拦截
        if(UserHolder.getUser()==null){
            //7.不存在，拦截，设置状态码
            response.setStatus(401);
            //8.拦截，放行
            return false;
        }
        //8.放行
        return true;
    }
}